abstraction: remove unused getProxyAbstraction on OperationAbstraction

Most likely a remnant of abstraction refactoring to OperationAbstraction and
Value where Value is using the functionality, not the OperationAbstraction

alib2abstraction/src/abstraction/OperationAbstraction.cpp

@@ -16,8 +16,4 @@ std::string OperationAbstraction::getReturnType ( ) const {
 	return ext::to_string ( getReturnTypeIndex ( ) );
 }
-std::shared_ptr < abstraction::OperationAbstraction > OperationAbstraction::getProxyAbstraction ( ) {
-	return shared_from_this();
-}
-
 } /* namespace abstraction */

alib2abstraction/src/abstraction/OperationAbstraction.hpp

@@ -11,7 +11,7 @@ namespace abstraction {
 class Value;
-class OperationAbstraction : public std::enable_shared_from_this < OperationAbstraction > {
+class OperationAbstraction {
 public:
 	virtual void attachInput ( const std::shared_ptr < abstraction::Value > & input, size_t index ) = 0;
 	virtual void detachInput ( size_t index ) = 0;
@@ -40,8 +40,6 @@ public:
 	std::string getReturnType ( ) const;
 	virtual abstraction::TypeQualifiers::TypeQualifierSet getReturnTypeQualifiers ( ) const = 0;
-
-	virtual std::shared_ptr < abstraction::OperationAbstraction > getProxyAbstraction ( );
 };
 } /* namespace abstraction */

alib2abstraction/src/abstraction/PackingAbstraction.hpp

@@ -119,10 +119,6 @@ public:
 		return getAbstractions ( ) [ m_resultId ]->getLifeReference ( )->getReturnTypeQualifiers ( );
 	}
-	std::shared_ptr < abstraction::OperationAbstraction > getProxyAbstraction ( ) override {
-		return getAbstractions ( ) [ m_resultId ]->getLifeReference ( )->getProxyAbstraction ( );
-	}
-
 };
 } /* namespace abstraction */

alib2abstraction/src/abstraction/WrapperAbstraction.hpp

@@ -94,13 +94,6 @@ public:
 			throw std::domain_error ( "ReturnTypeQualifiers not available before evaluation." );
 	}
-	std::shared_ptr < abstraction::OperationAbstraction > getProxyAbstraction ( ) override {
-		if ( this->m_abstraction )
-			return this->m_abstraction->getProxyAbstraction ( );
-		else
-			throw std::domain_error ( "Proxy abstraction not available before evaluation." );
-	}
-
 };
 } /* namespace abstraction */